Suitable for both hot and cold foods. Not suitable for use in a microwave or oven. Not recommended for long-term refrigeration. Made from bamboo paper with PLA coating inside. This PLA Coated bamboo paper is food grade and eco-friendly, creating a water and grease-resistant layer that helps to keep food fresh. Versatile and perfect for a variety of foods, such as salad, yogurt, noodle, curry and laksa. Industrial compostable.